Name changed for this. I've been using perifit since February, also for prolapses/rectocele. I found an article that listed 3 similar devices as all pretty good and picked this as the one I thought I'd enjoy most. I've mostly been using it 3-5 times a week, but with a few lighter weeks/weeks off when I was ill.
I like it. The games and reward system have encouraged me to keep using it. You start off with a few basic games and unlock more as you progress and complete workouts. Some of the games can be a bit samey as there are only so many things you can do with squeeze and relax (and I got a bit fed up of flappy bird at first till I'd unlocked more), but there is a fair selection. Plus some focussed exercises that work on strength, speed etc, and which I feel are the things that actually give the best exercise. And every so often it gives you a benchmark test so you can see your results over time. Some games/exercises are versus other users (e.g. pong, which I find fun).
It's pretty straightforward to use, but is sensitive to being in exactly the right place. Too far in and it's too easy; not in far enough and you can squeeze madly and it doesn't register. Some games seem more sensitive than others. Whenever I think it's not right I check position and recalibrate. My results are odd as it looks like I've actually deteriorated, but I think my starting measurements were a bit off. And because it's so sensitive to position, I'm not sure how accurate the results are anyway. But I'm just working on the basis that it's helping me keep up with the exercises, and not worrying about specific outcomes.
Would I recommend it? Probably, yes. But it's the only thing like this I've tried, so I don't have anything to compare it to. The women's health physio I saw recently told me my pelvic floor was pretty good, and confirmed that I was squeezing correctly.
As for the prolapses, well they're still there, but most of the time things seem more manageable than before I started using it. However I don't know how much of that is just becoming more used to what my body is like now, and the advice of the women's physio, rather than anything to do with the perifit. It's just rubbish, having prolapses, isn't it.